But the court did back the police's contention that they were entitled - and obliged - to take preventative action as they "reasonably and honestly" believed that breaches of the peace would have occurred if the coaches reached Fairford.

In its judgement, the court also said there "...may be circumstances in which individual discrimination amongst a large numbers of uncooperative people may be impractical" and that this was such a case.

John Halford, solicitor for the protesters, told BBC News 24: "The court made it clear that we won on the main issues and awarded all of our costs against the police."

Body armour

One of the leading protesters, Jane Laporte, said: "It was just completely surreal being surrounded by motorcycle outriders and Land Rovers and police filming us constantly while we were on the coaches.

"We couldn't believe it was happening in this country.

"This is why we were supposed to be going to war in Iraq, because people were being denied their freedom of speech, and it was happening to us."

Items removed by police from the coaches included masks, white overalls, scissors, five shields and body armour.

The protesters were on their way to join a demonstration against the war in Iraq when they were detained for more than two hours.

They were then escorted back to London without stopping in a two and a half hour journey with no toilet facilities on the buses.

The circumstance and length of this detention were ruled by the court to be "wholly disproportionate".

'No one hurt'

A statement by Gloucestershire Police read: "The court has made it clear that the operational commander on the ground was lawfully entitled to turn those coaches away. In fact, it was his duty to do so.

"While the court has decided that it was wrong for the police to escort those coaches back, they made it clear that there was no basis whatsoever for doubting the Operational Commander's intentions or motives in doing so. He was acting in entirely good faith.

"In fact, there is no word of criticism whatsoever in the judgement.

"The fact that no one was hurt that day and that a lawful protest was able to take place with the cooperation of the local community and without disruption to military operations demonstrates that this operation was entirely successful."

Both the police and protesters have been given leave to appeal.

Mr Halford said protesters planned to appeal against the court's ruling that two articles of human rights law had not been breached, and were looking at compensation claims.